mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 02:15:23 +07:00
b3ee571e58
it's x86-only and we have no business playing with it in asm/mmu.h; make the latter have struct uml_arch_mm_context arch; instead of struct uml_ldt ldt; and let arch/<subarch>/um/asm/mm_context.h decide what'll be in there. While we are at it, kill host_ldt.h - it's not needed in part of places that include it (we want asm/ldt.h in those) and it can be trivially expanded into the single remaining one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2004 Fujitsu Siemens Computers GmbH
|
|
* Licensed under the GPL
|
|
*
|
|
* Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
|
|
*/
|
|
|
|
#ifndef __ASM_LDT_H
|
|
#define __ASM_LDT_H
|
|
|
|
#include <linux/mutex.h>
|
|
#include <asm/ldt.h>
|
|
|
|
extern void ldt_host_info(void);
|
|
|
|
#define LDT_PAGES_MAX \
|
|
((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
|
|
#define LDT_ENTRIES_PER_PAGE \
|
|
(PAGE_SIZE/LDT_ENTRY_SIZE)
|
|
#define LDT_DIRECT_ENTRIES \
|
|
((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)
|
|
|
|
struct ldt_entry {
|
|
__u32 a;
|
|
__u32 b;
|
|
};
|
|
|
|
typedef struct uml_ldt {
|
|
int entry_count;
|
|
struct mutex lock;
|
|
union {
|
|
struct ldt_entry * pages[LDT_PAGES_MAX];
|
|
struct ldt_entry entries[LDT_DIRECT_ENTRIES];
|
|
} u;
|
|
} uml_ldt_t;
|
|
|
|
#define LDT_entry_a(info) \
|
|
((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
|
|
|
|
#define LDT_entry_b(info) \
|
|
(((info)->base_addr & 0xff000000) | \
|
|
(((info)->base_addr & 0x00ff0000) >> 16) | \
|
|
((info)->limit & 0xf0000) | \
|
|
(((info)->read_exec_only ^ 1) << 9) | \
|
|
((info)->contents << 10) | \
|
|
(((info)->seg_not_present ^ 1) << 15) | \
|
|
((info)->seg_32bit << 22) | \
|
|
((info)->limit_in_pages << 23) | \
|
|
((info)->useable << 20) | \
|
|
0x7000)
|
|
|
|
#define _LDT_empty(info) (\
|
|
(info)->base_addr == 0 && \
|
|
(info)->limit == 0 && \
|
|
(info)->contents == 0 && \
|
|
(info)->read_exec_only == 1 && \
|
|
(info)->seg_32bit == 0 && \
|
|
(info)->limit_in_pages == 0 && \
|
|
(info)->seg_not_present == 1 && \
|
|
(info)->useable == 0 )
|
|
|
|
#ifdef CONFIG_X86_64
|
|
#define LDT_empty(info) (_LDT_empty(info) && ((info)->lm == 0))
|
|
#else
|
|
#define LDT_empty(info) (_LDT_empty(info))
|
|
#endif
|
|
|
|
struct uml_arch_mm_context {
|
|
uml_ldt_t ldt;
|
|
};
|
|
|
|
#endif
|